-308=4A-9(8+7A) help !!

Work Shown:

-308=4A-9(8+7A)

-308=4A-9(8)-9(7A) ... distribute

-308=4A-72-63A multiply

-308=-72-59A combine like terms

-308+72=-72-59A+72 ... add 72 to both sides

-236 = -59A

-59A = -236

-59A/(-59) = -236/(-59) ... divide both sides by -59

A = 4

Explanation:

The idea is to first distribute and combine like terms. From there you follow PEMDAS in reverse to isolate A fully. That's why I added 72 to both sides to undo the subtraction, and divided both sides by -59 to undo the multiplication.

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: