The inequality would be
0.75q ≥ 0.70(q+1)
q is defined as the number of questions he answers after the first one. We are told he gets 75% of those correct; 75%=75/100=0.75. This gives us 0.75q.
Since he gains proficiency on the exercises, the total number he gets correct has to be at least 70%. This means the inequality would have the symbol greater than or equal to, as it cannot be less and have him gain proficiency.
He has already answered 1 question and answers q more; this gives us a total of q+1. Since he gains proficiency, the cutoff was 70%; 70%=70/100=0.70. This gives us the expression 0.70(q+1).
Our total inequality would then be 0.75q ≥ 0.70(q+1)
Answer:
$(25+5x) or $5(5+x)
Step-by-step explanation:
multiply x with $5 = $5x
add $25 to $5x = $(25+5x)
Answer:
2(3-4a)+5(a-7)
=6-8a+5a-35
=-3a-29
Step-by-step explanation:
Change 1/4 to 2/8 and then add. the answer is 7 7/8.
