1. A researcher collected data from car shoppers about their favorite car color. He asked 250 people about their favorite vehicle color and the survey revealed the following: 32% said blue, 24% said white, 20% said red, 18% said black, and 4% said silver.

(a) What percent preferred a color other than blue, white, red, black, or silver?

please explain I'm confused on this

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z

How are algebraic expressions evaluated using substitution?