A math teacher surveys 10 randomly selected students in her classes. She finds that 7 of the 10 speak more than one language fluently. Based on this information, how many of her 140 students could be expected to speak more than one language fluently?

Need on this one asap im almost done with this subject

Agraphic designer created a logo on eight and a half by 11 inch paper. in order to be placed on a business card, the logo needs to be one and 7/10 inches by 2 and 1/5 in. what is the scale factor of the dilation

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.