Explanation for Question 1 From the Math (No Calc) Section on the 2020 October Sat
So question number one is asking us how many, 2 how many days to buy us rented the kayak. 3 If he was charged $60 per day, 4 $25 for delivery, and then also 5 paid a total of $325. 6 And so we can just this information here to write an equation where 325 7 is the total that he paid. He paid $600 per day. 8 So we can make this variable D days and say that for every day 9 he had to pay $60 and then finally a one-time charge, 10 right? Plus $25 for that one-time delivery. 11 And if we're looking for the number of days that he rented, the kayak 12 for all that we need to do is solve for D the first step 13 will be to subtract 25 from both sides. 14 That gives us 300 is equal to 60 days. 15 We can cancel off and zeros from two of them because they're both divisible 16 by 10. And so now that we have the alone, 17 but with the six, we can divide by six and see that five is 18 equal to the number of days that Tobias rented the kayak for.