What is the volume of a rectangle with a height of 11 inches a length of 15 inches and width of 7 inches

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!

Solve the system of equations. y=3x-1 and y=-2x+9. show work