Answer:
I only did the problems that I could see
Explanation:
Problem 1:
Notice that the value of "s" increases by 2 when the value of "r" increases by 1, starting at (0,1.5). This means that the rate of change, or slope, is 2, and the y-intercept is 1.5, which means our equation is s=2r+1.5, making option B correct.
Problem 2:
2x+10=50 -> 2x+10-10=50-10 -> 2x=40 -> 2x/2=40/2 -> x=20, so option B is correct.
Problem 3:
What y=9x+200 means in the context of this problem is that as Kevin works one hour at the bakery, he's earning $9 per hour, in addition to the initial $200 he started with after 0 hours. So, option A is correct.
Problem 4:
Again, like in problem 3, the rate is $2 per bottle, plus the starting amount of $250 in the checking account, making option C correct.
Problem 7:
C is the correct choice because 0+3=3, 2+3=5, and 4+3=7
Problem 8:
Note the open circle at x=3 and how the inequality points to the left. This means that x<3 represents all the possible solutions, making choice A correct.
Problem 9:
A is correct because when you solve 2x=8, you divide both sides by 2 to get x=4.
Problem 10:
Set up the equation 700=10x+500 where "x" represents the number of months. By solving the equation, you'll get x=20, making option A correct.