Elizabeth is holding a dinner party, but she doesn’t have enough plates or cups.

to fix this, she goes to the store and buys p plates and cups.

given that plates cost $9 and cups cost $7, write an expression for the total cost of all the plates and cups.

Every plate costs $9, so p plates cost $9p (you have to multiply the unit cost of a plate by the number of plates you buy).

By the same logic, if a cup costs $7, c cups cost $7c.

The total expense is the sum of the two expenses, so we have

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!

where is abdul's work? don't see that anywhere posted : /

step-by-step explanation: