91影视

Tension needs to eat at least an extra $1000$calories a day.

He has only $\$25$to spend on the extra food.

Donuts cost $\$0.75$which have $360$calories each.

Energy drinks cost $\$2$which have $110$calories each.

Let, $d$be number of donuts and $e$be number of energy drinks.

Donut costs $\$0.75$, Energy drink costs $\$2$and Tension has $\$25$. So, the required inequality is: $0.75d+2e鈮�25$.

Donut has $360$calories, energy drink has $110$calories and Tension needs at least $1000$calories. So, the required inequality is: $360d+110e鈮�1000$.

Therefore, the system of inequalities is: $\left\{\begin{array}{l}0.75d+2e鈮�25\\ 360d+110e鈮�1000\end{array}\right.$

Below is the required graph of the system of inequalities: $\left\{\begin{array}{l}0.75d+2e鈮�25\\ 360d+110e鈮�1000\end{array}\right.$

As the point $(8,4)$ is in the double shaded region of the graph. so, Tension can buy 8 donuts and 4 energy drinks.

As the point$(1,3)$is not in the double shaded region of the graph, so, Tension cannot buy $1$donut and$3$ energy drinks.