Enrique is saving money to buy a graphing calculator. So far he has saved $30. His math teacher told him he has saved 40% of what he will need. How much does the calculator cost? I know the answer, I just need the steps. Thanks! :)

The calculator cost $75

Step-by-step explanation:

Let

x ----> the calculator cost

Remember that

we know that

The cost of the calculator multiplied by the percentage saved must be equal to the amount saved by Enrique

so

solve for x

Divide by 0.40 both sides

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation: