An athlete spends 75 minutes a day on a cardio workout and 60 minutes a day on strength workout. The athlete does the cardio workout 20 days in a month, and the strength workout 25 days in the month. Which equation could be used to find n, the total number of minutes the athlete spends working out in the month?

20 × 75 + 25 × 60 = n

75 × 60 + 20 × 25 = n

20×75−25×60=n

75 + 60 × 25 + 25 = n

The investigating team suspected that there were differences in the cost of repairing cars in workshop i and workshop ii. the investigating team suspected that the costs raised by workshop i were greater than workshop ii. for that they tested the repair of 15 cars in each workshop to see the cost of repairs.the decision of the right hypothesis to prove the suspicion above is a. h0 : μ1- μ2­ = 0; ha : μ1- μ2­ ≠ 0 b. h0 : μ1- μ2 ≥ 0; ha : μ1- μ2 < 0 c. h0 : μd ≥ 0; ha : μd < 0 with μd = μ2- μ1 d. h0 : μd = 0; ha : μd ≠ 0 with μd = μ2- μ1 e. h0 : μ1- μ2 = 0; ha : μ1- μ2 ≥ 0