The speed of the motorboat is 38 km / h and the speed of the river is 2.5 km / h. 1) How many kilometers would a motorboat sail if it first sailed in a lake for 2 hours and then sailed in the river for another 2.5 hours downstream? 2) initially swim in the river for 3 hours upstream and then swim in the lake for another 2.5 hours?

idk wish i could help

Step-by-step explanation:

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!

multiply then divide

step-by-step explanation: