Question

100 POINTS FOR 5 QUESTIONS, PLEASE ANSWER!

1. j+150x50 is a(n)______ expersion, because______.

A. numerical expression ; it consists of only numbers
B. numerical expression ; it consists of operation symbols
C. Algebraic expression ; it consists of numbers and a variable
D. Algebraic expression ; it has more than one operation symbol

2. chris earns 10 dollars each time he washes his neighbors car. the expersion 10x represents chris' earnings. what does the variable in the expression represent
A. no variable
B. the number of times the neighbor drives the car
C. the amount of money chris earns per wash
D. the number of times chris wases the car

3. use the following values to evaluate each expression
w=13,x=9,y=1.9,z=0.5
x=20-1
A. 28
B. 19
C. 30
D. 32

4.use the following values to evaluate each expression
w=13,x=9,y=1.9,z=0.5
x times 2+4
A. 22
B. 85
C.173
D.7.61

5. use the following values to evaluate each expression
w=13,x=9,y=1.9,z=0.5
w+x+y
A.22
B.24.4
C.23.9
D.11.4

Please help me!

Answer 1

Q1 - answer: D

Q2 - answer: D ( spelling mistake, I am going to assume that wases is washes)

Q3 - 19 ( is this really necessary?)

Explanation:

Q1: can be answered by process of elimination. A, it consists of ONLY numbers i8s wrong! the expression contains 2 variables. then B is wrong once again. then C. now this one had me for a moment but if you look closer you will see the flaw. it says " it consists of numbers and A variable. In the equation there are 2. so C is also incorrect. so D is the correct answer. not only that everything it says applies to the expression.

Q2: for this one if you read the question carefully you will find out the answer. now, it says Chris earns 10 dollars EACH TIME he washes his neighbors car. so that means that, that the amount of times he washes the car is the variable. lets say or example, he washes the car 7 times. then the 10x becomes 10(7). which is 10 times 7.

I need to get to lunch i promise I will do 4 and 5 soon.

Answer 2

1: C

2: D

3: A

4: B

5: C

Explanation: