PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER!! Edgar has test scores of 87, 92, 90, 84, 88, and 91. What is the lowest grade Edger can get on the next test to have an A average (90 or higher)?
A. 94
B. 96
C. 98
D. 100

98

Step-by-step explanation:

Let x be the next test score

87, 92, 90, 84, 88, and 91, and x

We want to average them and the average to 90

(87+ 92+ 90+ 84+ 88+ 91+x)/7 = 90

Multiply each side by 7

(87+ 92+ 90+ 84+ 88+ 91+x)/7*7 = 90*7

(87+ 92+ 90+ 84+ 88+ 91+x) = 630

Combine like terms

x+532=630

Subtract 532

x = 630-532

x= 98

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".