Your math test scores are 68, 78, 90, and 91. what is the lowest score that you can earn on the next test and still achieve an average of at least 85?

98 is the lowest score that you can earn on the next test and still achieve an average of at least 85.

Step-by-step explanation:

Math test scores are:  68, 78, 90, and 91

Average of the math test score = A = 85

Let the lowest score needed to achieve an average of 85 be x

Average =

98 is the lowest score that you can earn on the next test and still achieve an average of at least 85.

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13