1. June collects books. Last year she had 20 books in her collection. Now she has 30 books. What is the percent increase of her collection? 2. Mallory’s bill at the Townie Deli is $15.70, not including tax. If she leaves an 18% tip and has to pay 7% sales tax, how much is the total bill?
3. A tablespoon is equivalent to about 4 teaspoons. A recipe calls for 2/3 cup of sugar for every 1/2 teaspoon vanilla. What is the unit rate in tablespoons per cup?

2) 19 dollars and 63 cents.

Step-by-step explanation:

not inc. tax = $15.70.

18% tip x $15.70=$2.83

7% tax x $15.70 = $1.10

$15.70 + $2.83 + $1.10 = $19.63

i dont understand the question? ?

step-by-step explanation:

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!