8x-9y=19
4x+y=-7
Multiply all terms of the 2nd by (9)===> 36x + 9y= 63
add (36x 9y= 63) to the 1st ===> 44x+0y = -44 ===> x=-1
replace x by this value in any of the equation & you'll get y=-3
2x^2 + 25x + 50 not sure about the steps
The recursive formula for f(n) is f(n) = 4.25 + f(n - 1), f(0) = 2.25.
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
Let f(n) represent the total cost of shoe rentals for n games, hence:
The recursive formula for f(n) is f(n) = 4.25 + f(n - 1), f(0) = 2.25.
Find out more on equation at: brainly.com/question/2972832
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The answer will be C. I hope this helped you! ^^
