A scientist estimates that there are 2.2×10 to the seventh power walleye in Lake Erie. the total volume of Lake Erie is 4.83×10th 11th power cubic meters. a pond with the volume of 200,000 cubic meters is built to model the lake. how many walleye should be put in to the pool to model the conditions in the lake

How do you solve a question like this?

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

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