The price of an extra-large pizza increased from $12 to $15. what was the percent of increase in the cost of the pizza? round to the nearest percent, if necessary.
a. 25%
b. 15%
c. 3%
d. 20%

Atriangle has side lengths of 15 inches and 30 inches. it also has angles that measure 45º and 20º. which of the following identifies the possible third angle of the triangle? a. 15 in., 65º b. 45 in., 65º c. 17 in., 115º d. 14 in., 115º

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1