1. what is 40% of 30?
2. 120 is what percent of 200?
3. last year there were 260 students in a soccer program. this year, that number increased by 140%. how many more students joined the soccer program this year?
4. josef left a 22% tip on a 120$ dinner bill. how much was in the tip?
5. megan worked 20 hours last week. this week she worked 80% more hours. how many more hours did she work this week?

1.) 12

Step-by-step explanation: When multiplying a percentage by any number turn the percentage onto a decimal and multiply it. 40% as a decimal is .40.

the answer is 31.27mph

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