It’s 7 1/2 because 4x3 gives you the length of the bigger rectangle so, you multiply 2 1/2x3 and get 7 1/2 :)
ANSWER= 25
a= 4 b=7
10+(7-4)•5
subtract 7-4= 3
10+3•5
multiply 3•5=15
10+15
add them and your answer is 25
1,699*8 = 13,592
If they it’s by two then 27,184
(1699*2=3398 * 8 = 27184
♀️
8.5 is the nearest one
square root of 72 is about 8.48
rounding to the nearest tenth gives you 8.5