Mwangi wants to download songs and lectures on his smartphone. he plans to download at least 30 songs and lectures (condition a), but he can download at most 300-megabytes of data (condition b). the graph represents the constraints on the number of songs, s and lectures, l mwangi downloads. what is the greatest number of lectures mwangi can download while meeting both constraints?

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.