Evaluate -(7^-3)(7^5)
A: 49,
B: -49,
C: -1/49,
D: 1/49.

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

How can you construct perpendicular lines and prove theorems about perpendicular lines

Me i’m stuck on all these questions besides the two bottom ones