Madison saves 40% of all that she earns for washing cars. So far she has saved $72. How much has she earned in all?

Madison has earned 180 dollars in all.

Step-by-step explanation:

Let denotes amount earned by Madison.

Percentage of amount saved by Madison

Amount saved by Madison dollars

Therefore,

dollars

So,

Madison has earned 180 dollars in all.

the quotient is 4x^2 - 27x + 167 with a remainder of -996

step-by-step explanation:

in synthetic division, use -6 as the divisor and use the coefficients {4, -3, 5, 6}:

-6     )   4     -3     5     6

                -24   162 -1002

          4   -27   167   -996

thus, the quotient is 4x^2 - 27x + 167 with a remainder of -996.

note:   your "4x°-3x+5x+6" is ambiguous / incomplete.   i had to assume that you meant '4x^3 - 3x^2 + 5x + 6."

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94