Question

Sherlock wants to rent a textbook. He has to pay a fixed base cost plus a daily rate for renting the textbook. The table shows the amount of money, y, in dollars, that Sherlock has to pay for renting the textbook for x days:

Textbook Rental

Number of days
(x) Rent (dollars)
(y)
0 6
1 13
2 20
3 27
4 34


Which equation best shows the relationship between x and y?
y = x + 13
y = 7x + 13
y = x + 6
y = 7x + 6

Answer 1

Hello,

Let's assume f(x) the rent for x days
f(0)=6=6+0*7
f(1)=6+1*7=13
f(2)=6+2*7=20
f(3)=6+3*7=27
f(4)=6+4*7=34

f(x)=6+x*7

Answer D y=7x+6