Divide across and just bring down the numbers
Answer:
Hypothesis Testing:
Manufacturer claims that the average of time their mosquito repelllent is effective is at least 3.5hrs l.e μ ≥ 3.5hrs
Step-by-step explanation:
Answer:
12.5
Step-by-step explanation:
7.5+5=12
I believe the answer is B because you multiply 18 and 40 then subtract 320 from that and you will 400.