13. A 136-foot antenna is on top of a tall building. From a point on the ground, the angle of elevation to the top of the antenna is 28.5, while the angle of elevation to the bottom of the antenna from the
same point is 21.5: How tall is the building? (Round your answer to the nearest whole number.)

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

b. 2 and 4

step-by-step explanation: