If the total cost is $87, and it is split among 4 children, each will pay $21.75, because 87/4= 21.75.
Substitute -4 for F and do the arithmetic.
.. C = (5/9)*(-4-32) = (5/9)(-36) = -20
-4 °F corresponds to -20 °C.
9 58/100 in mixed number form
x+7=4
x=-3
x+7=-4
x=-11
A is correct
for absolute value problems, solve for x when the total is positive and negative
