Luis wants to buy a skateboard that costs $89.99. He has $30 saved. He wants to save $11 each week until he has enough money to pay for the skateboard. What is the least number of weeks Luis has to save until he has enough money to pay for the skateboard? Group of answer choices

first you would have to subtract $89.99 - $30 to get $69.99 then multiply 11 x 7 to get 77. the answer is 7 weeks

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value