Last year the price of the phone, in dollars, was c. This year the cost of the phone increased by 15%. What is an expression for the price of the phone this year?

1.15c= cell phone cost

Step-by-step explanation:

this is because if last year cost C and this year increase 15%, that can be expressed in .15c as a decimal from.

if we combine the cost of last year C plus .15c that is the percent that increase that result in 1.15c that will give you the new cost

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.