Which shows the expression below simplified?
(8 x 107) * 0.008
A.
1.6 10-21
B.
6.4 x 10-21
C. 6.4 * 104
D. 6.4 x 105

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

The tile along the edge of a triangular community pool needs to be replaced? ?