30 points
1)the function g is defined by g(x)=cx−3, where c is a constant. find c, if the value of g(x) at x=0.5 is equal to −1.
2)the function h is defined by h(x)=(20x−k)÷x+50, where k is a constant. find k, if the value of ℎ at x=20 is equal to 65.

1) The value of c is given by

2) The value of k is given by

Step-by-step explanation:

Given that function g is defined by , where c is a constant.

To find c:

Also given that value of g(x) at x=0.5 is equal to -1

ie.,

At x=0.5

Therefore

2) Given that function h is defined by , where k is a constant.

To find k:

Also given that value of h(x) at x=20 is equal to 65

ie.,

At x=20

Therefore

answer: the first one

step-by-step explanation: use a calculator and divide the minutes by the dollars.

huh? im pretty sure it is in 199

step-by-step explanation: