Lisa’s test grades are 79, 89, and 90.

What is Lisa’s test average?

Lisa's text average is 86 :))

Step-by-step explanation:

add all numbers up then divide them by 3.

5x+2x=49

7x=49

x=7. 35 apples

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square