x = one number and 3x + 12 = the other number, for the equation:
x + 3x +12 = − 20
4x +12 = −20
4x = −32
x = −8
3(−8) + 12 = −12
Tony buys a burger for \(\$3 \)and a bottle of juice for \( \$1.50\) every day. Which expression shows the total amount he would spend on his burger and juice over a 5-day period?
The right circular cylinder shown in the figure above has a height of 10 units and a radius of 1 unit. Points O and P are the centers of the top and bottom surfaces, respectively. A slice is cut from the cylinder as shown, so that the angle at the top, O, is 60 degrees, and the angle at the bottom, P, is 60 degrees. What is the volume of the slice?
If 7 bananas cost \(\$2.55\), what will be the cost for 14 bananas? Round your answer to the nearest penny .