15 mph 5280 ft 1 hr
----------- * ------------- * ------------ = 1320 feet per min.
1 1 mile 60 min
You might want to make use of the fact that 60 mph = 88 ft/sec.
First one is valid.
Followed by fourth and fifth one.
Hope this helps.
Answer:
0.884
Step-by-step explanation:
When you multiply exponents together, you add the powers values together.
Step 1: Multiply base numbers
6.8(1.3) = 8.84
Step 2: Multiply (add) exponentials

Step 3: Combine into scientific notation

Step 4: Evaluate into standard form
0.884
You just multiply 450 by .18 and it'll give you the 18% you have to add to 450.
So the equation would look like:
450(.18)=81
Which you then add:
450+81= 531
So 531 is your total!