Barbara has 7 swimsuits. she needs to take 4 swimsuits on a vacation. in how many different ways can she choose 4 swimsuits out of 7 a. 35 b. 840 c. 24 d. 210

You should use here the formula for combinations

In your case n=7, k=4, then

35 ways, option A.

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!

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.