Dakota earned money mowing laws this summer. she put 80% of the money in savings she then spends 25% of the remaining money on music downloads. if she has 99$ left to spend on other things, how much money did she earn this summer?

She spent 25% and had $99 left.

$99 is 75% of the remaining money.

Divide to find the total remaining

99 / 0.75 = $132

Now she put 80% of her total earnings in the bank, this means the remaining amount is 20%.

Divide the remaining amount by 20%:

132 / 0.20 = $660

She earned $660 total.

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign