Choose the best answer.

14. A helium atom has 2 electrons, each of

which has a - 1 charge. Each proton has

a + 1 charge. Overall, the helium atom

has no charge. How many protons must

the atom have?

A. - 2

B. o

c. 2

D. 3

Kristin spent $128 on shirts. Fancy shirts cost $20 and plain shirts cost $10. If she bought a total of 8 shirts, then how many of each kind did she buy?

What's the solution of the ordered pair 4x+8y=60 7x-2y=9

How many zeros does the function f (x) = 7x13 - 12x9 + 16x5 - 23x + 42 have? 4 5 9 13

In a newspaper, it was reported that yearly robberies in Springfield were up 16% to 87 in 2014 from 2013. How many robberies were there in Springfield in 2013?

96 is 10% of what number? Round to the nearest hundredth. a 960.00 b 9600.00 c 96.00 d 9.60

a trapezoid has an area of 114.5 square feet. One base is7.9 feet long. The height measures 10 feet. what is the length the other base

570 mL = ? oz, show work

The figure is made up of a cylinder and a half sphere. What is the volume of the composite figure? Use 3.14 for Pi. Round to the nearest hundredth. A cylinder and half sphere. Both have a radius of 4 millimeters.

What is the value of x 80+30=x

Ten to the fourths power as a products of tens