7. Tessa bakes muffins in an oven. • The oven takes 10 minutes to warm up before the first tray of muffins can be baked.
• Each tray of muffins takes 20 minutes to bake.
How much time will have passed from when the oven starts warming up until Tessa finishes the third tray
of muffins?

A.30 mins
B.50 mins
C.60 mins
D70 mins

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!

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720

i have not got your picture clearly so see it once again

the answer would be a 24

step-by-step explanation:

c=2πr=2·π·3=24