Simplify the following expression 21 (*-4) + 2

An item costs $420 before tax, and the sales tax is $12.60. Find the sales tax rate. Write your answer as a percentage.

Tyrone is twice as old as his daughter. In six years Tyrone's age will be three times what his daughter's age was six years ago. How old are they at present? write 2 equations.

Which metric unit would you use to measure: 1. The length of a newspaper. 2. The height of a lamp post. 3. The length of a bus route. 4. The width of a ruler.

What is the slope of a line that passes through (-12,15) and (0,4) A. 11/12 B. - 12/11 C. 12/11 D. - 11/12

6*1+5*1/10 in a decimal represents

What is solution for the following system of equations, 2x+8y=4 and x=-3y+5 1) X=14 Y=-3 2) X=2 Y=-3 3) X=-3 Y=-3 4) X=12 Y=5

Some amount of billiard balls were arranged in an equilateral triangle. And 4 balls were extra. When the same set of billiard balls were arranged into triangle in which each side has one more ball than in the first arrangement there were 3 balls

A true-false question is to be posed to a husband and wife team. Both the husband and the wife will give the correct answer with probability 0.8.

A half-mile of road will be marked with a combination of yellow dashes that are 10 feet long and gaps that are 2 feet wide between dashes. How many yellow dashes must be painted on that part of the road? Note: 1 mile = 5,280 feet. 660 220 264 1,320

Naomi drank 3/4 of a 20.8 ounce container of apple juice. How may ounces of apple juice did naomi drink