In a random sample of 250 frozen pepperoni pizzas of a particular brand, 7 do not have enough pepperoni slices. At this rate, how many of 12,000 frozen pepperoni pizzas of the same brand
will not have enough pepperoni slices?

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.

Need will give 100 ! in no less than one hundred fifty words, explain why it is important for engineers to sketch designs and use them to clarify their designs to other people, giving at least three reasons.